Answer:
c. In 2 seconds, the commuter train travels 120 feet.
Step-by-step explanation:
Given
The attached graph
Required
What does x-coordinate of 2 represents
Represent this coordinate with (x,y)
From the graph:
when 
Note that:
x = time and y = distance
So:

Which means:
At 2 seconds, the train has travelled a distance of 120ft
<em>From the list of options, (c) is correct</em>
Answer:

Step-by-step explanation:
Given


Required
Determine the percentage of the shaded cubes
First, we calculate the number of boxes:

Express as multiplication


This implies that there are 20 cubes in the box.
The percentage of the shaded cubes is:





<em>30% were shaded</em>
Answer:

Step-by-step explanation:
The equation of a circle with center (h,k) and radius r is given by the formula;

Given (h,k)=(0,0) and r=4, we substitute the values to obtain;

The required equation is

What do you mean by find those numbers?